A Volumetric Difference-based Adaptive Slicing and Deposition Method for Layered Manufacturing

[+] Author and Article Information
Y. Yang, J. Y. H. Fuh, H. T. Loh, Y. S. Wong

Department of Mechanical Engineering, National University of Singapore, 9 Engineering Drive 1, Singapore 117576

J. Manuf. Sci. Eng 125(3), 586-594 (Jul 23, 2003) (9 pages) doi:10.1115/1.1581887 History: Received October 01, 2001; Revised November 01, 2002; Online July 23, 2003
Copyright © 2003 by ASME
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Evaluation of staircase by cusp height
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Cusp height and volumetric error
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(a). Relationship between cusp height and area difference; (b). two extreme cases when δ is near to 0° (solid line) and 90° (dashed line)
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Local difference between two adjacent layers
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Definition of difference volume (shaded area)
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Difference between two contours
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Difference types: (a) fragment (b) complex fragment (c) ring (d) complex ring
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Boolean algorithm between two polygons
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Identification of critical plane
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Path generation of difference
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Deposition strategy for regions of: (a) positive difference (b) negative difference
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(a) Conventional slicing and deposition method and (b) high-precision exterior, high-speed interior deposition method
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Example of a sliced part (a) model to be processed (b) result of volumetric-based adaptive slicing method



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